HighlightsA new empirical SRP model is proposed for BeiDou GEO satellites.This model includes 3 constant terms and 3 periodic terms.Periodic terms in the D direction are the most important for BeiDou GEO satellites.The BeiDou GEO satellite orbits are evidently stabilized with the new SRP model.

    AbstractTwo classic empirical solar radiation pressure (SRP) models, the Extended Center for Orbit Determination in Europe (CODE) Orbit Model ECOM 5 and ECOM 9 have been widely used for Global Positioning System (GPS) Medium Earth Orbit (MEO) satellites precise orbit determination (POD). However, these two models are not suitable for BeiDou Geostationary Earth Orbit (GEO) satellites due to their special attitude control mode. With the experimental design method this paper proposes a new empirical SRP model for BeiDou GEO satellites, which is featured by three constant terms in DYX directions, two sine terms in DX directions and one cosine term in the Y direction. It is the first time to reveal that the periodic terms in the D direction are more important than those in YX directions for BeiDou GEO satellites. Compared with ECOM 5 and ECOM 9, the BeiDou GEO satellite orbits are significantly stabilized with the new SRP force model. The average orbit overlapping root mean square (RMS) achieved by the proposed model is 7.5cm in the radial component, which is evidently improved over those of 37.4 and 13.2cm for ECOM 5 and ECOM 9, respectively. In addition, the correlation coefficients between GEO orbit overlaps precision and the elevation angle of the Sun have been decreased to −0.12, 0.21, and −0.03 in radial, along-track and cross-track components by using the proposed model, while they are −0.94, −0.79 and −0.29 for ECOM 5 and −0.70, 0.21 and 0.10 for ECOM 9. Moreover, the standard deviation (STD) of Satellite Laser Ranging (SLR) data residuals for the GEO satellite C01 is reduced by 37.4% and 16.1% compared with those of ECOM 5 and ECOM 9 SRP models.


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    Title :

    A new empirical solar radiation pressure model for BeiDou GEO satellites


    Contributors:
    Liu, Junhong (author) / Gu, Defeng (author) / Ju, Bing (author) / Shen, Zhen (author) / Lai, Yuwang (author) / Yi, Dongyun (author)

    Published in:

    Advances in Space Research ; 57 , 1 ; 234-244


    Publication date :

    2015-10-30


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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